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S66286 Stainless Steel vs. R56401 Titanium

S66286 stainless steel belongs to the iron alloys classification, while R56401 titanium belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is S66286 stainless steel and the bottom bar is R56401 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 17 to 40
9.1
Fatigue Strength, MPa 240 to 410
480
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 75
40
Shear Strength, MPa 420 to 630
560
Tensile Strength: Ultimate (UTS), MPa 620 to 1020
940
Tensile Strength: Yield (Proof), MPa 280 to 670
850

Thermal Properties

Latent Heat of Fusion, J/g 300
410
Maximum Temperature: Mechanical, °C 920
340
Melting Completion (Liquidus), °C 1430
1610
Melting Onset (Solidus), °C 1370
1560
Specific Heat Capacity, J/kg-K 470
560
Thermal Conductivity, W/m-K 15
7.1
Thermal Expansion, µm/m-K 17
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.2
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 26
36
Density, g/cm3 7.9
4.5
Embodied Carbon, kg CO2/kg material 6.0
38
Embodied Energy, MJ/kg 87
610
Embodied Water, L/kg 170
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 200
83
Resilience: Unit (Modulus of Resilience), kJ/m3 190 to 1150
3440
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 22 to 36
59
Strength to Weight: Bending, points 20 to 28
48
Thermal Diffusivity, mm2/s 4.0
2.9
Thermal Shock Resistance, points 13 to 22
67

Alloy Composition

Aluminum (Al), % 0 to 0.35
5.5 to 6.5
Boron (B), % 0.0010 to 0.010
0
Carbon (C), % 0 to 0.080
0 to 0.080
Chromium (Cr), % 13.5 to 16
0
Hydrogen (H), % 0
0 to 0.012
Iron (Fe), % 49.1 to 59.5
0 to 0.25
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 1.0 to 1.5
0
Nickel (Ni), % 24 to 27
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.13
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 1.9 to 2.4
88.5 to 91
Vanadium (V), % 0.1 to 0.5
3.5 to 4.5